[Max Concurrent Writes] seems not effectives

[tomasz86 (Tomasz Wilczyński)]

Please see https://forum.syncthing.net/t/what-are-the-risks-associated-with-increasing-the-max-concurrent-writes-setting/16287, and especially the last post:

@calmh

Max concurrent writes is specifically just about how many write requests we have outstanding towards the filesystem at any given point. If you have a disk system where each request is slow (spinning disks) but it can handle a lot of them concurrently (RAID of many spinning disks) then increasing this might be helpful. In most other cases it won’t. It doesn’t affect anything about how Syncthing requests data over the network.